Observation of stimulated Raman scattering in silicon nanocomposites
Abstract
In this paper, we report on the observation of stimulated Raman scattering in silicon nanocomposites, consisting of silicon nanoparticles dispersed in SiO2 matrix prepared by sol-gel method. Using a 1427nm cw pump laser, amplification of Stokes signal, at 1542.2nm, up to 1.4dB /cm is demonstrated. A preliminary valuation of approximately a fivefold enhancement of the gain coefficient in Raman amplifier based on silicon nanocomposites with respect to silicon and a significant reduction of threshold power are also reported. These results have a potential interest for silicon-based Raman lasers.
- Publication:
-
Applied Physics Letters
- Pub Date:
- June 2009
- DOI:
- 10.1063/1.3148669
- Bibcode:
- 2009ApPhL..94v1106S
- Keywords:
-
- 81.07.-b;
- 81.20.Fw;
- 61.46.Df;
- 42.65.Dr;
- 42.55.Ye;
- 42.55.Wd;
- Nanoscale materials and structures: fabrication and characterization;
- Sol-gel processing precipitation;
- Nanoparticles;
- Stimulated Raman scattering;
- CARS;
- Raman lasers;
- Fiber lasers